Premier Nitrospray cryotherapy flask constructed of a double-walled vacuum stainless steel container to hold liquid nitrogen. The outflow track extension port, located on the top of the instrument has a luer-lock connector to easily engage & disengage spray tips and other attachments as required. Features: Double walled vacuum cryotherapy flaskEasy connect luer lock connectorRelief valve precisely regulates pressureCurved trigger provides unobstructed view of treatment siteEasy to hold grooved headDurable stainless steel constructionSpray tip protector prevents accidental damage and contact with patient Specification: Holding Time: 6-8 HoursIntermittent Use: 3-6 Hours Treatment TimePackage Inclusions: Flask, Set of five spray tips & Spray tip protectorCapacity: 300 (Nitrospray Lite) & 475ml (Nitrospray Plus)Construction Materials: 303 Stainless Steel, 304 Stainless Steel, Acetal